<fieldset style="border: 0; margin: 1em 0 0.5em 0; clear: both;">
  <section style="border-top: 2px solid red; text-align: left;"
           tn-page-editable="richtext0" editable-type="ed-type-rich-text" tn-not-editable-attr="backgroundColor">
    <section style="display: inline-block; padding: 0 0.5em 0 0.5em;"
             ng-style="{
              'font-size': eo.fontSize,
              'font-family': eo.fontFamily,
              'font-style': eo.fontStyle,
              'font-weight': eo.fontWeight,
              'text-align': eo.textAlign,
              'text-decoration': eo.textDecoration,
              'color': eo.color,
              'background-color': (eo.borderColor || theme.majorColor) }"
             tn-rich-text-content>
      标题
    </section>
  </section>
</fieldset>